^ abBurkey, Martin (1998-04-03). "Rees turned rocket visions into reality". The Huntsville Times. Dr. Eberhard Rees, Wernher von Braun's deputy from World War II Germany to the manned lunar landings, died at 3:10 a.m. Thursday in a Florida hospital. He was 89. Rees's colleagues described him as the cautious, common-sense, day-to-day manager who turned the legendary rocket team leader's vision into reality. "He was the guy behind von Braun that made a lot of it happen," said J.R. Thompson, a longtime NASA official.

^Wright, Mike. "Eberhard Rees Was Marshall's Second Center Director". Management. Marshall Space Flight Center History Office. Retrieved 2008-04-29. With Skylab we are not concerned primarily with flying a spacecraft. We are concerned with the important aims of living and working in Earth orbit and conducting the experiments that will eventually lead to many beneficial results